Microbiology: A Systems Approach, 7th
Edition All Chapters 2024/2025
(Questions And Solved Answers) Already
Graded A+
Which of the following is a unique characteristic of viruses that distinguishes them from
the other major groups of microorganisms?
cause human disease
lack a nucleus
cannot be seen without a microscope
contain genetic material
lack cell structure
lack cell structure
The surgeon who advocated using disinfectants on hands and in the air prior to surgery
was
Joseph Lister.
Ignaz Semmelweis.
Robert Koch.
Louis Pasteur.
Antonie van Leeuwenhoek.
Joseph Lister.
The smallest and most significant taxon is
genus.
species.
kingdom.
family.
phylum.
species
,Which of the following is a scientific name?
gram-positive streptococcus
Staphylococcus
Streptococcus pyogenes
anthrax
Streptobacilli
Streptococcus pyogenes
The Five I's of studying microorganisms include all of the following except
inoculation.
incubation.
infection.
isolation.
identification.
infection
The term that refers to the purposeful addition of microorganisms into a laboratory
nutrient medium is
isolation.
inoculation.
immunization.
infection.
contamination.
inoculation
A pure culture contains
only one species of microorganism.
only bacteria.
a variety of microbes from one source.
a variety of species from the same genus.
None of the choices is correct.
only one species of microorganism
,Which of the following is essential for development of discrete, isolated colonies?
broth medium
differential medium
selective medium
solid medium
assay medium
solid medium
What type of isolation technique is most effective for the majority of applications?
pour plate
streak plate
spread plate
loop dilution
culture plate
streak plate
Agar is an important component of media because
bacteria require agar to grow.
agar inhibits mold growth.
agar provides a solid surface for bacterial growth.
agar prevents contamination.
All of the choices are correct.
agar provides a solid surface for bacterial growth
A rod-shaped bacterium is measured as 0.3 micrometers (um) in length using an ocular
micrometer. Your instructor wants you to report the length in millimeters (mm) to test
your understanding of metric conversions. What is the length of the organism in
millimeters?
300 mm
0.0003 mm
0.03 mm
3 mm
, 0.0003 mm
Which of the following magnifies the specimen to produce its real image?
condenser
objective lens
ocular lens
body
nosepiece
objective lens
The type of microscope in which you would see brightly illuminated specimens against a
black background is
bright field.
dark field.
phase contrast.
fluorescence.
electron.
dark field
What do the Gram stain, acid-fast stain, and endospore stain have in common?
They are used on a wet mount of the specimen.
They use heat to force the dye into cell structures.
The outcome is based on cell differences.
They use a negative stain technique.
They are simple stains.
The outcome is based on cell differences
Which of the following is not a characteristic of bacteria?
Its DNA is not encased in a membrane.
It has a cell wall made of peptidoglycans or other distinct chemicals.
It does not have membrane-bound organelles.
Its DNA is wrapped around histones.
Its DNA is wrapped around histones
Edition All Chapters 2024/2025
(Questions And Solved Answers) Already
Graded A+
Which of the following is a unique characteristic of viruses that distinguishes them from
the other major groups of microorganisms?
cause human disease
lack a nucleus
cannot be seen without a microscope
contain genetic material
lack cell structure
lack cell structure
The surgeon who advocated using disinfectants on hands and in the air prior to surgery
was
Joseph Lister.
Ignaz Semmelweis.
Robert Koch.
Louis Pasteur.
Antonie van Leeuwenhoek.
Joseph Lister.
The smallest and most significant taxon is
genus.
species.
kingdom.
family.
phylum.
species
,Which of the following is a scientific name?
gram-positive streptococcus
Staphylococcus
Streptococcus pyogenes
anthrax
Streptobacilli
Streptococcus pyogenes
The Five I's of studying microorganisms include all of the following except
inoculation.
incubation.
infection.
isolation.
identification.
infection
The term that refers to the purposeful addition of microorganisms into a laboratory
nutrient medium is
isolation.
inoculation.
immunization.
infection.
contamination.
inoculation
A pure culture contains
only one species of microorganism.
only bacteria.
a variety of microbes from one source.
a variety of species from the same genus.
None of the choices is correct.
only one species of microorganism
,Which of the following is essential for development of discrete, isolated colonies?
broth medium
differential medium
selective medium
solid medium
assay medium
solid medium
What type of isolation technique is most effective for the majority of applications?
pour plate
streak plate
spread plate
loop dilution
culture plate
streak plate
Agar is an important component of media because
bacteria require agar to grow.
agar inhibits mold growth.
agar provides a solid surface for bacterial growth.
agar prevents contamination.
All of the choices are correct.
agar provides a solid surface for bacterial growth
A rod-shaped bacterium is measured as 0.3 micrometers (um) in length using an ocular
micrometer. Your instructor wants you to report the length in millimeters (mm) to test
your understanding of metric conversions. What is the length of the organism in
millimeters?
300 mm
0.0003 mm
0.03 mm
3 mm
, 0.0003 mm
Which of the following magnifies the specimen to produce its real image?
condenser
objective lens
ocular lens
body
nosepiece
objective lens
The type of microscope in which you would see brightly illuminated specimens against a
black background is
bright field.
dark field.
phase contrast.
fluorescence.
electron.
dark field
What do the Gram stain, acid-fast stain, and endospore stain have in common?
They are used on a wet mount of the specimen.
They use heat to force the dye into cell structures.
The outcome is based on cell differences.
They use a negative stain technique.
They are simple stains.
The outcome is based on cell differences
Which of the following is not a characteristic of bacteria?
Its DNA is not encased in a membrane.
It has a cell wall made of peptidoglycans or other distinct chemicals.
It does not have membrane-bound organelles.
Its DNA is wrapped around histones.
Its DNA is wrapped around histones
